https://github.com/jcupitt/ruby-vips

用途 libvips http://www.vips.ecs.soton.ac.uk/index.php?title=Speed_and_Memory_Use

同 carrierwave: https://github.com/eltiare/carrierwave-vips

Benchmarks:

https://github.com/stanislaw/vips-benchmarks https://github.com/stanislaw/carrierwave-vips-benchmarks

Why use ruby-vips?

• It supports over 250 low-level image and color manipulation operations.
• Operations are chainable and do not get executed until the image is sent to an output.
• Memory use is low, even for very, very large images.
• Fastest ruby library for resizing large images.